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A fossilized material in shale and other sedimentary rock that yields oil upon heating.

[Greek kēros, wax + -gen.]


(Minerals) the solid organic material found in some rocks, such as oil shales, that produces hydrocarbons similar to petroleum when heated
[C20: from Greek kēro(s) wax + -gen]


(ˈkɛr ə dʒən, -ˌdʒɛn)

the bituminous matter in oil shale from which shale oil is obtained by heating and distillation.
[1905–10; < Greek kēró(s) wax + -gen]
References in periodicals archive ?
4) ratio values imply that the samples contain mostly Type III kerogen with minor Type IV and Type II/III kerogens.
and yield hydrogen index values ranging from 282 to 510 mg HC/g TOC with low oxygen index values, consistent with Type II and mixed Type II-III kerogens.
For instance, we've studied samples of different types of rocks including kerogens, which are found in oil shales," he says.
In most samples organic matter (OM) consists predominantly of type I and II kerogens, showing high oil generative potential, whereas three samples, which contain type II kerogen with a certain input of type III kerogen, demonstrated potential to produce both, oil and gas.
Nitrogen chemistry of kerogens and bitumens from X-ray absorption near-edge structure spectroscopy.
The organic matter (OM) of HD oil shale belongs to type I kerogen, that of YJ oil shale is type II kerogen, whereas the OM of MM oil shale appears to be between type I and type II kerogens [20].
However, it was more similar to type I kerogen, which suggests that kerogens of these two types have rather good oil-generating potential [18].
Shales, which mostly contain Type I and III kerogens and are characterized by high TOC with an average content of 1.
The dominant oxygen-containing compounds in the pyrolysates of Mol and Bure kerogens were furanic derivatives, which were quite few in the Dachengzi oil shale pyrolysates.
All these minerals and kerogens thermally decompose into different chemical species at different temperatures.
Structural and isotopic analysis of kerogens in sediments rich in free sulfurised Botryococcus braunii biomarkers.